测定结构钢冷脆特征温度用试样的设计  

SPECIMEN DESIGN FOR DETERMINATION OF THE BRITTLENESS CHARACTERISTIC TRANSITION TEMPERATURE OF STRUCTURAL STEEL

作　　者：类维生[1,2] 姚枚[1,2] 陈丙森[1,2] 田锡唐[1,2] 

机构地区：[1]清华大学 [2]哈尔滨工业大学,清华大学

出　　处：《机械强度》1996年第1期37-40,共4页Journal of Mechanical Strength

基　　金：国家自然科学基金

摘　　要：研究了三组具有不同几何尺寸的１６Ｍｎ裂缝弯曲试样的断裂行为，并对试样的应力场进行了有限元分析。表明采用所设计的三组试样测定材料的冷脆特征温度ＴＣ都是有效的，并推荐选用１０ｍｍ×１０ｍｍ×５５ｍｍ、裂纹深度为４ｍｍ的试样测定ＴＣ。Three sets of three-point-bend pre-cracked specimens with different dimensions were used to investigatethe fracture behavior of 16Mn steel at lot-temperatures.The stress distribution below crack tip was analyzed by the finiteelement method.It is indicated that the determinations of the new ductile-brittle transition temperature,T*C,defined as'characteristic transition temperature of brittleness',are valid for the three sets of specimens. Finally,the speimen with thedimension of 10 mm×10 mm×55 mm with a pre-crack of 4 mm in depth is recommended for the determination of T*C.

关 键 词：结构钢 冷脆 度样几何 有限元 

分 类 号：TG142.41[一般工业技术—材料科学与工程]